For whatever reason, I’ve never been a huge fan of Olivia Munn. I don’t know what it is. I think she’s beautiful, she’s even a decent actress, but I just don’t consider myself a fan….

Olivia has talked before about suffering from trichotillomania, which is an anxiety disorder that causes people to pull out their own hair. Some people pull out the hair on their head, while others pull out their eyebrows and eyelashes. Olivia says she pulls out her eyelashes, and she recently opened up about how she hides it from the cameras.

It’s hard to believe when you see her confident performance on The Newsroom, but Olivia Munn suffers from anxiety so severe that it causes her to pull out her own eyelashes.

“It’s called trichotillomania,” the actress, 33, told PEOPLE Wednesday at the L’Oreal Women in Digital Awards in N.Y.C. “It’s the same thing as people who bite their nails.”

Munn’s condition, which began when she was 26, is triggered by big social situations. “If I were to walk into someone’s birthday party, I’d have a bad anxiety attack,” she admits, which in turn causes her to start lash-pulling.

Fortunately, the star’s experience in the makeup chair has given her the know-how to put together an easy fix. “I just created my own little lash-band with individuals,” she says, adding that she has a powder mix that she applies to her eyelids to help the false lashes adhere.

The rest of her beauty routine is simple: relying on “a good lip balm [she likes a Body Shop one] and a hair tie” to beat the summer heat.

And her final beauty must: Showing off her freckles. “I’ve had them since I can remember … it’s just my skin,” she tells PEOPLE. “I don’t like it when people try to cover them up!”